kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 15373 Comm: syz-executor1 Not tainted 4.20.0-rc1-next-20181107+ #107
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:locks_remove_flock+0x216/0x350 fs/locks.c:2567
Code: 00 0f 85 3a 01 00 00 48 8b 5b 98 48 85 db 74 3a e8 1f 41 92 ff 48 8d 7b 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 17 01 00 00 48 8b 5b 08 48 85 db 74 0d e8 f2 40
RSP: 0018:ffff880171af7880 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000041b58ab3 RCX: ffffffff81ed555d
RDX: 000000000836b157 RSI: ffffffff81ed5c71 RDI: 0000000041b58abb
RBP: ffff880171af7a60 R08: ffff8801d70d0100 R09: ffffed003b5c5b67
R10: ffffed003b5c5b67 R11: ffff8801dae2db3b R12: ffff8801bcecf840
R13: ffff880171af78f8 R14: 1ffff1002e35ef13 R15: dffffc0000000000
FS:  0000000002299940(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004db19b CR3: 00000001b7a4a000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 locks_remove_file+0x148/0x5c0 fs/locks.c:2607
 __fput+0x2f0/0xa70 fs/file_table.c:271
 ____fput+0x15/0x20 fs/file_table.c:312
kobject: 'ip6gretap0' (000000006c9c5cf0): kobject_add_internal: parent: 'net', set: 'devices'
 task_work_run+0x1e8/0x2a0 kernel/task_work.c:113
kobject: 'ip6gretap0' (000000006c9c5cf0): kobject_uevent_env
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_usermode_loop+0x318/0x380 arch/x86/entry/common.c:166
kobject: 'ip6gretap0' (000000006c9c5cf0): fill_kobj_path: path = '/devices/virtual/net/ip6gretap0'
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
 do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293
kobject: 'queues' (0000000040c3c239): kobject_add_internal: parent: 'ip6gretap0', set: '<NULL>'
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
kobject: 'queues' (0000000040c3c239): kobject_uevent_env
RIP: 0033:0x411021
Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 19 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007fff702c3630 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000411021
RDX: 0000000000000000 RSI: 0000000000732ea0 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 00007fff702c3550 R11: 0000000000000293 R12: 0000000000000000
kobject: 'queues' (0000000040c3c239): kobject_uevent_env: filter function caused the event to drop!
R13: 0000000000000001 R14: 0000000000000136 R15: 0000000000000001
Modules linked in:
kobject: 'loop3' (000000007f128c8c): kobject_uevent_env
---[ end trace fe28c17f4c4ce123 ]---
kobject: 'loop3' (000000007f128c8c): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'rx-0' (00000000b7e73696): kobject_add_internal: parent: 'queues', set: 'queues'
RIP: 0010:locks_remove_flock+0x216/0x350 fs/locks.c:2567
kobject: 'rx-0' (00000000b7e73696): kobject_uevent_env
Code: 00 0f 85 3a 01 00 00 48 8b 5b 98 48 85 db 74 3a e8 1f 41 92 ff 48 8d 7b 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 17 01 00 00 48 8b 5b 08 48 85 db 74 0d e8 f2 40
kobject: 'rx-0' (00000000b7e73696): fill_kobj_path: path = '/devices/virtual/net/ip6gretap0/queues/rx-0'
kobject: 'loop2' (00000000cdc201ea): kobject_uevent_env
kobject: 'tx-0' (00000000118f3ad5): kobject_add_internal: parent: 'queues', set: 'queues'
RSP: 0018:ffff880171af7880 EFLAGS: 00010202
kobject: 'tx-0' (00000000118f3ad5): kobject_uevent_env
kobject: 'tx-0' (00000000118f3ad5): fill_kobj_path: path = '/devices/virtual/net/ip6gretap0/queues/tx-0'
kobject: 'loop2' (00000000cdc201ea): fill_kobj_path: path = '/devices/virtual/block/loop2'
RAX: dffffc0000000000 RBX: 0000000041b58ab3 RCX: ffffffff81ed555d
kobject: 'loop5' (00000000ce87fe84): kobject_uevent_env
RDX: 000000000836b157 RSI: ffffffff81ed5c71 RDI: 0000000041b58abb
kobject: 'loop5' (00000000ce87fe84): fill_kobj_path: path = '/devices/virtual/block/loop5'
RBP: ffff880171af7a60 R08: ffff8801d70d0100 R09: ffffed003b5c5b67
kobject: 'nullb0' (0000000053719ebb): kobject_uevent_env
kobject: 'bridge0' (000000009a806df9): kobject_add_internal: parent: 'net', set: 'devices'
kobject: 'nullb0' (0000000053719ebb): fill_kobj_path: path = '/devices/virtual/block/nullb0'
R10: ffffed003b5c5b67 R11: ffff8801dae2db3b R12: ffff8801bcecf840
kobject: 'loop3' (000000007f128c8c): kobject_uevent_env
kobject: 'bridge0' (000000009a806df9): kobject_uevent_env
kobject: 'loop3' (000000007f128c8c): fill_kobj_path: path = '/devices/virtual/block/loop3'
R13: ffff880171af78f8 R14: 1ffff1002e35ef13 R15: dffffc0000000000
kobject: 'bridge0' (000000009a806df9): fill_kobj_path: path = '/devices/virtual/net/bridge0'
kobject: 'queues' (00000000e5f67f5f): kobject_add_internal: parent: 'bridge0', set: '<NULL>'
FS:  0000000002299940(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
kobject: 'queues' (00000000e5f67f5f): kobject_uevent_env
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kobject: 'queues' (00000000e5f67f5f): kobject_uevent_env: filter function caused the event to drop!
CR2: 00007fc61a9f2000 CR3: 00000001b7a4a000 CR4: 00000000001426e0
kobject: 'rx-0' (00000000ef5b756e): kobject_add_internal: parent: 'queues', set: 'queues'
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
kobject: 'rx-0' (00000000ef5b756e): kobject_uevent_env
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
kobject: 'rx-0' (00000000ef5b756e): fill_kobj_path: path = '/devices/virtual/net/bridge0/queues/rx-0'